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AS12156
AURORA-COLORADO - City of Aurora Colorado Announcing routesAS nameAURORA-COLORADO
OrganisationCity of Aurora Colorado
Registry (RIR)ARIN
HandleAS12156
RangeAS12156
Registered24 Jan 2018
Last changed24 Jan 2018
6IPv4 prefixes
0IPv6 prefixes
3Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS13649 | ASN-FLEXENTIAL - Flexential Colorado Corp. | 227 |
| AS33652 | CMCS - Comcast Cable Communications, LLC | 226 |
| AS209 | CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC | 197 |
Downstreams
None seen.
IPv4 prefixes (6)
RPKI-validate all prefixes of AS12156
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | City of Aurora Colorado | CAC-3 | 15151 E. Alameda Parkway, Information Technology, Aurora, CO, 80012, United States | |
| abuse, technical, routing, noc, administrative, dns | SCOTT NEWMAN | NEWMA272-ARIN | [email protected], +1-303-739-7015 | 5445 DTC PKWY, SUIT 600, GREENWOOD VILLAGE, CO, 80111, United States |
| noc, routing, dns, abuse, technical | Eric Otieno | OTIEN-ARIN | [email protected], +1-303-739-7557 | 15151 E. Alameda Pkwy., Aurora, CO, 80012, United States |
| technical | COA-ARIN | COAAR-ARIN | [email protected], +1-303-739-7545 | 15151 E. Alameda Pky, Suite 4200, Aurora, CO, 80012, United States |
| abuse, dns, technical, noc, routing | Josh Smith | SMITH6162-ARIN | [email protected], +1-303-739-7760 | 15151 E. Alameda Parkway, Aurora, CO, 80011, United States |
Raw registry response
{
"endAutnum": 12156,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-01-13T12:45:40-05:00"
},
{
"eventAction": "registration",
"eventDate": "2020-02-14T13:31:12-05:00"
}
],
"handle": "NEWMA272-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NEWMA272-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/poc/NEWMA272-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2024-01-13"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"technical",
"routing",
"noc",
"administrative",
"dns"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "5445 DTC PKWY\nSUIT 600\nGREENWOOD VILLAGE\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"SCOTT NEWMAN"
],
[
"n",
[],
"text",
[
"NEWMAN",
"SCOTT",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-739-7015"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-04T08:45:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-01-07T11:45:01-05:00"
}
],
"handle": "OTIEN-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/OTIEN-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/poc/OTIEN-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"routing",
"dns",
"abuse",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "15151 E. Alameda Pkwy.\nAurora\nCO\n80012\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Eric Otieno"
],
[
"n",
[],
"text",
[
"Otieno",
"Eric",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-739-7557"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-10T10:16:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "2018-01-09T14:42:38-05:00"
}
],
"handle": "COAAR-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COAAR-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/poc/COAAR-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-09-10"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "15151 E. Alameda Pky\nSuite 4200\nAurora\nCO\n80012\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"COA-ARIN"
],
[
"org",
[],
"text",
"City of Aurora"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-739-7545"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-10T10:16:40-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-07-11T14:39:24-04:00"
}
],
"handle": "SMITH6162-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SMITH6162-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/poc/SMITH6162-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-09-10"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"dns",
"technical",
"noc",
"routing"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "15151 E. Alameda Parkway\nAurora\nCO\n80011\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Josh Smith"
],
[
"n",
[],
"text",
[
"Smith",
"Josh",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-739-7760"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-07-12T17:15:39-04:00"
},
{
"eventAction": "registration",
"eventDate": "1994-03-14T00:00:00-05:00"
}
],
"handle": "CAC-3",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CAC-3",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/org/CAC-3",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"City of Aurora Colorado"
],
[
"adr",
{
"label": "15151 E. Alameda Parkway\nInformation Technology\nAurora\nCO\n80012\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2018-01-24T13:13:47-05:00"
},
{
"eventAction": "registration",
"eventDate": "2018-01-24T13:13:47-05:00"
}
],
"handle": "AS12156",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/12156",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12156"
},
{
"href": "https://whois.arin.net/rest/asn/AS12156",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"name": "AURORA-COLORADO",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/12156"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 12156,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.